多型性

Novel rod like phenylene thiophene based polyhydroxy amphiphiles, derivatives of gallic acid combining three hydrophilic 2,3-dihydroxypropyloxy groups and one alkyl chain via central aromatic linking units, have been synthesized by using Ni, Pd(0) catalyzed coupling reaction as key steps.

以Ni， Pd (0)催化的C-C偶合反应为关键步骤合成了基于苯联噻吩的棒状型多羟基两亲性分子，它们是以棒状芳香核为中心部分，一端带三重亲水的2，3-二羟基链，另一端为带一条烷基链的没食子酸衍生物。

Here, we took demonstration study of the ecological impacts of disconnection from the river on fish recources in Zhangdu Lake. Our results showed that:(1) Fishery mode changed and the rate of wild fishery production changed from 95% in 1949 to less than 5% in 2002.(2) Fish species have decreased from 80 in 1950s to 52 at present, and the rate of migrant and potamic species decreased from 50% in 1950s to 30% at present.(3) Comparing with the linking lake, Zhangdu Lake had higher fishing production, larger individual size, fewer species number and lower diversity index of "mihunzheng" fishery, a universal fishing tool in Yangtze.

我们以涨渡湖为例开展江湖阻隔后对单个湖泊鱼类资源所产生的生态影响进行研究，结果表明：江湖阻隔导致湖泊生产经营方式改变，使得野生渔业产量的比例由1949年的95%，降低到2002年的不足5%；江湖阻隔后湖泊鱼类种类由50年代约80种下降到现在的52种，其中，洄游性和流水型鱼类比重由50%下降至不足30%；迷魂阵渔获物在单位产量、个体大小上极显著(p 0.01)地高于通江湖泊，但在物种数和多样性指数上则要低得多(p 0.01)。

Immunohistochemical assay were performed with HGV NS5 McAb. Results One of four samples showed positive staining, some of which located in cytoplasm and some of which in cytonucleus and cytomembrane. The number of positive staining cells are not more. More of them disrtibuted scatteredly, some of them located.

结果 1例呈阳性染色，光镜观察显示：特异染色大部分定位于肝细胞胞浆中，部分有核着色和膜型染色，呈黄色或棕黄色颗粒状，阳性细胞数量少，大多散在分布，部分呈灶性分布；阳性细胞周围可见较多淋巴细胞浸润。

Spinocerebellar ataxias are a clinically and genetically heterogeneous group of neurodegenerative disorders.

第一部分 SCA家系致病基因定位第一章一个新的SCA家系致病基因定位脊髓小脑型共济失调(spinocerebellar ataxias，SCA)是一种具有高度临床和遗传异质性的神经系统退行性疾病，多呈常染色体显性遗传。

Because of the great varity of streptothrix serum type and the complex structure of antigen, it presents different clinical symptom, such as septicemia, meningoencephalitis, endocarditis, pneumonias, porodenia arthritis etc.

由于链球菌血清型较多，抗原结构复杂，在临床上又可呈现不同的症状，如败血症、脑膜脑炎、心内膜炎、肺炎、化脓性淋巴结炎、关节炎等，还常常与其他疾病发生合并感染。

Although there was no difference in striatal dopamine levels between exercised and nonexercised MPTP-lesioned mice, exercise increased striatal DA levels in control mice.

纹状体多巴胺水平在处理后和未处理的mptp缺陷型小鼠中没有显著性差异，但是对照组水平在处理后提高了。

Genetic type of Telangiectasia mostly familial genetic.

遗传型红血丝多是家族性遗传。

The study is to improve the producing efficacy of AR vaccine. Toxigenic Pasteurella multocida.(Pm 13-1) was cultured in the 15L BIOSTAT.C fermentor with experimental parameters (Time, Air Flow, Speed of stir, and pH).

为提高猪传染性萎缩性鼻炎疫苗生产效率，采用工作容积15立升的BIOSTAT·C型发酵罐，培养经鉴定作为制苗菌株的产毒素多杀巴氏杆菌Pm 13-1株。

In gastric ulcerocancer, the main radiological changes of the interface are small teniform non-plicae area, the slim irregular plicae near the ulcer connecting with distal clubbed plicae. The juxta-ulcer presentation are instinct mucosal plicae, especially blurred teniform plicae and reticular plicae accompanying with "target sign" in most cases and the pathologic changes of peri-ulcer are chronic atrophic gastritis, intestinal epithelial metaplsia and epithelial heterotypic hyperplasia of gastric mucosal etc.

溃疡型胃癌溃疡病灶与周围交界面主要X线表现为小带状无皱襞区，近溃疡侧的纤细不规则皱襞与远侧的杵状皱襞相接；溃疡旁X线表现是粘膜皱襞影像多较模糊，尤以模糊条纹状皱襞及模糊网格状伴有&靶征&居多，病理镜下改变是以慢性萎缩性胃炎、肠上皮化生及胃粘膜上皮异型增生等癌前病变为主。

According to the ore-forming depth,epithermal Au-Ag polymetallic deposits distributed from b...

同时，根据我国浅成低温热液Au、Ag多金属矿床特征尝试性提出了浅成低温热液型银矿床的成矿规律与找矿标志。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。